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Hepatic angiomyolipoma: identification of an efferent vessel to be hepatic vein by contrast-enhanced harmonic ultrasound

¹ Department of Ultrasound, the Third Affiliated Hospital, Sun Yat-sen University, Shipai, Guangzhou 510630, China and ² Department of Gastroenterology and Hepatology, Kinki University School of Medicine, Osaka-Sayama, Japan

We report two patients with rare hepatic angiomyolipoma and demonstrate the special tumour haemodynamics with contrast-enhanced harmonic ultrasound. This reliably identified the efferent vessel of the hepatic angiomyolipoma to be the hepatic vein in both cases, which corresponded well with that seen on conventional angiography and CT angiography. This haemodynamic finding may be an important characteristic of hepatic angiomyolipoma, and facilitate the differential diagnosis from other benign and malignant hepatic tumours.